Its Time to Unleash the Semantic Layer

The semantic layer is the underpinning of modern business intelligence platforms. The real number might be closer to 60% or even higher. It was pioneered by Business Objects in the early 90's well before the acquisition by SAP and they still remain the market leader in BI after all these years. Back to the original question - what is the semantic layer exactly? Close, but I think thats too high level and simplistic.